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DOes anyone know where is the bug tracker for the bug of AMDGPU driver shutting down the screen permanently if used with Wayland?

I thought that was traced back to a DisplayPort problem in the DC code and not a Wayland thing. I was experiencing the same display shutdown during boot, and I'm not using Wayland - I switched from the DP connector to the DVI connector and the problem no longer exists.

Comment

I thought that was traced back to a DisplayPort problem in the DC code and not a Wayland thing. I was experiencing the same display shutdown during boot, and I'm not using Wayland - I switched from the DP connector to the DVI connector and the problem no longer exists.

Comment

DOes anyone know where is the bug tracker for the bug of AMDGPU driver shutting down the screen permanently if used with Wayland?

Are you using DisplayPort 1.2? There is a related bug that's fixed in 4.20-rc6. I reported the above bug, and it took a while but AMD fixed it.
As a workaround you can also disable DP 1.2 mode in your monitor (older version of DP isn't affected).

Wayland crash is related to these and was caused by the above. But KWin developers claimed it's the right behavior (though not quite clear why).

Comment

Are you using DisplayPort 1.2? There is a related bug that's fixed in 4.20-rc6. I reported the above bug, and it took a while but AMD fixed it.
As a workaround you can also disable DP 1.2 mode in your monitor (older version of DP isn't affected).